Grist-mill



UNITED STATES PATENT OFFICE.

DAVID D. WAGENER, OF PITTSBURGH, PENNSYLVANIA.

GRIST-MILL.

Specification of Letters Patent No. 1,065, dated January 8, 1839-.

To all whom it may concern Be it known that I, DAVID D. VVAGENER, of thecity of Pittsburgh, county of Allegheny, and State of Pennsylvania, haveinvented a new and Improved Mode of Packing and Gearing Mill-Spindles;and I do hereby declare that the following is a full and exactdescription.

The nature of my invention consists, 1st, in the sustaining of thestepping in a metal carriage placed and movable, by means of screws, inany horizontal direction upon the bottom of a metal box, which box isfastened upon the bridge-tree by means of keys that render it, also,movable in any horizontal direction. 2dly, in the attachment of thespindleto the bedstone by means of a cast metal bush containing withinit packing similar to the packing of a steam engine piston, which can becompressed or relaxed at will by a follower moved from without byscrews. 3dly, in the employment of a metal eye which is firmly cementedinto the eye of the runner; and in the connecting in one solid castingthatmetal eye, a metal rynd or spindle bail and the metal driver boxes.

To enable others skilled in the art to make and use my invention I willproceed to de scribe its construction and operation.

I construct my stepping in any of the known forms, as represented in thediagram 1), Figure 1, I support it in a carriage E Fig. 1, upon thebottom of a metal box M Figs. 1 and 5. Both the carriage and box aremovable horizontally in any direction; the motion of the box being uponthe bridge-tree T, Fig. 1, and governed by the keys W, Fig. 1, which actupon the clasps Q, Fig. 5, and the two sides the one of which is markedZ, Fig. 5, the motion of the carriage being upon the bottom of the boxand governed by four screws, having their action directly toward thecenter of the carriage where the lines of action form four right angles.Of these screws three are represented in Fig. 1, and marked I.

It is apparent that the spindle may be easily and accurately geared orbought to the true perpendicular by tightening, or slackening the screwsas necessity may require; and that the inconvenience and inadequacy ofwedges, as now commonly employed to move and gear steppings uponbridge-trees, which so frequently cause the spindle to be urged over orwithin the true plumb line, are, by this arrangement simply andsuccessfully avoided. It will still further be readily perceived thatthe whole frame may easily be set, being movable separately or incomposition in a longitudinal or transverse direction, because it isattached to the bridgetree by keys; and that hence any advantage fromwedging, where wedging may be of any advantage, can be obtained bywedging the whole frame.

I construct my metal bush, Fig. 2 and P, Fig. 1, of any convenient size.It is a box. Its outward figure is rectangular. The lid L Figs. 1 and 2,is above and fastened permanently down by screws 17, Figs. 1 and 2. Thefollower F, Figs. 1 and 2 is inserted in below, through the orifice Q,Fig. 2, and is attached to a hexagonal metal plane V, Figs. 1 and 2. Thefollower is graduated by two screws, one of which is represented at X,Figs. 1 and 2. They pass freely through the hexagonal metal plane atopposite angles of it, and have their females contained in the lowersuperior corners of the bush marked B, Figs. 2 and 1, where the metalfor about one inch in thickness is, excepting those females, solid,after which it is a box or tube, 0 0, Fig. 2, the bore of which isgreater than the diameter of the screws. Tihese boxes or tubes areseparated from the interior of the bush by metal but have connectionswith it by means of several small passages, marked 0, Fig. 2. They arefilled with oil, which, passing through the passages, constantlylubricates whatever the interior of the bush may contain.

Through the follower, the interior of the bush and the neck of the lid,the collar of the spindle passes, as exhibited in Fig. 1, the nakedspindle being represented in juxtaposition in Fig. 3. Packing, similarto steam engine packing is placed in the interior of the bush above thefollower and, it is evident will be tightened or slackened as the screwsof the follo-werare driven or drawn. When the follower and spindle donot eX- actly fit, a ring R, F ig. 2, may be employed.

The metal eye Y Figs. 1 and 3 is firmly cemented into the runner. Itsform is cylindrical. Its driver boxes are projections II II at the twoterminations of the same diameter of the cylinder. There are, also, twoother projections, terminating that diameter of the cylinder which is atright angles to the one before mentioned; so that per-.

pendicular lines through the centers of the four projections woulddivide the circle of which the cylinder is composed into quadrants,externally. S S is the bail. With the eye and the driver boxes it formsone solid casting. f is one pole of the spindles axis. Immediately abovef and below its center in the bail is c, the spindles center of motionor cock-head; and above the cockhead and upon the top of the bail is aprojection which is square and acts as a nut or tenant upon a mortisewhich terminates the lower extremity of the dempsel; so that the dempselrevolves with the metal eye and with the runner to which the metal eyeis firmly cemented.

The driver is marked U, Figs. 1 and 3. It is, also, made of metal andfits accurately in the metal driver boxes. About its center a hexagonalmortise is cut, capable of being accurately adapted to the hexagon whichoccurs on the part of the spindle marked a, to which part the driverpertains and about which the metal box (eye) is placed as represented injuxta-position in Fig. 1 and 2.

It will be readily perceived from the solid connection of the hail, theeye and the driver boxes, from the unmovable nature of their attachmentto the runner, in the direction in which the action of the machinenaturally opposes that attachment as well as from its firmness in everydirection, from the manageability of my packing about the spindle andwithin the bush, from the extreme availability of an accurate gearing ofthe stepping and its solid metal support, that only the Wearing of thecockhead remains, of all those causes, which when wood, cement or stone,as now in common use are employed, occasion excessive friction,derangement in the position of the runner, (commonly termed lopsidedactiongl; cavities which detain the grain in fee ing and notunfrequently, most destructive fire in mills.

lVhat I claim as my invention and desire to secure by Letters Patentare:

1. The employment of the metal box attached to the bridge-tree by keysand movable longitudinally and transversely upon it, in combination withthe mode of adjusting, by means of screws, the carriage which holds thestepping of the lower pole of the spindle, the wholeas herein described.

2. The employing of a metal bush containing packing, through which thespindle is permitted to revolve; which packing may be tightened orslackened, even while the machine is in motion, by a follower, actedupon by screws movable from without as herein described.

DAVID D. WAGENER.

